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(11) | EP 4 303 541 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | DUAL COMPOSITE LIGHT FIELD DEVICE |
| (57) An apparatus comprising a processor (714); a wearable head device including a transmissive
display (700) comprising a waveguide (702) with an input face and an output face having
an exit location (710); and a diffractive optical element (704), DOE, formed across
the waveguide (701) and configured to couple input light into the waveguide and direct
the input light via total internal reflection to the exit location; and a light sensor
(712) configured to receive the input light via the waveguide (702) and generate a
sensor output signal corresponding to the received input light, wherein the processor
(714) is configured to generate an output based on the sensor output signal, the output
comprising a rectilinear array of pixel values, the sensor output signal comprises
one or more incoming pixel values, and generating the output comprises determining,
for a first pixel value of the rectilinear array of pixel values, a corresponding
incoming pixel value.
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